Should we just guess what button you are using? Should we just guess your config?
If using the custom button-card, this was one of the recent fixes for iPadOS. However you have not given any useful info for anyone to help you.
If using the custom button-card, check that thread as well as a few people are having issues with that card and d/l via HACS although I did download it again today and it seems to be working FWIW.